Web interface

The Mail Quarantine Web interface is an alternative to Mail Quarantine manager, however, it is only available for the Local quarantine.


Mail Quarantine Web interface is not available on a server with Edge Transport Server role because the Active Directory is not accessible for authentication.

The Mail Quarantine Web interface allows you to view the state of the mail quarantine. It also lets you to manage quarantined email objects. This web interface is accessible via links from quarantine reports or directly by entering a URL into a your web browser. To access the Mail Quarantine Web interface, you must authenticate using domain credentials. Internet Explorer will automatically authenticate a domain user. However, the web page certificate must be valid, Automatic logon exlink must be enabled in Microsoft Internet Explorer, and you must add the Mail Quarantine website to Local intranet sites.

Any user that exists in the Active Directory can access the Mail Quarantine Web interface, but will only see quarantined items that were sent to his email address (this includes the user's aliases as well). The Administrator is able to see all quarantined items for all recipients.


ESET Mail Security is not using IIS to run Mail Quarantine Web interface. Instead, it is using HTTP server API exlink which includes SSL support to allow data exchange over secure HTTP connections.

Web url

This is the URL on which the Web interface of Mail Quarantine will be available. By default, it is FQDN of the server with /quarantine (e.g. mailserver.company.com/quarantine). You can specify your own virtual directory instead of the default /quarantine. You can change the Web url anytime by editing the value.

The Web url value needs to be specified without a scheme (HTTP, HTTPS) and without a port number, use only fqdn/virtualdirectory form. Also, you can use wildcards instead of FQDN.

Once you modify the Web url, it is not possible to revert it back to default by clicking the revert DEFAULT icon. Remove the entry and leave the text box blank. Restart your server. When ESET Mail Security starts and finds the Web url is empty, it will automatically fill this field with the default fqdn/quarantine value.


ESET Mail Security supports Web urls in four different forms:

Strong wildcard (+/quarantine)
Explicit (mydomain.com/quarantine)
IP-bound weak wildcard (
Weak wildcard (*/quarantine)

See the Host-Specifier Categories section of UrlPrefix Strings exlink article for more information.

Web and report languages

Enables you to set language of quarantine Web interface and Quarantine reports.

HTTPS port

Used for the Web interface. Default port number is 443.

HTTP port

Used for releasing emails from quarantine via email reports.


If you do not have SSL certificate installed on IIS, configure HTTPS port binding. If you change the port number for HTTPS or HTTP, make sure to add corresponding port binding in IIS exlink.

Log release action to events

When releasing items from mail quarantine, this action is written to Log files.

Enable default administrators

By default, members of Administrators group are granted admin access to the Mail Quarantine Web interface. Admin access has no restrictions and let the Admin to see all quarantined items for all recipients. If you disable this option, only Administrator user accounts have access to the Mail Quarantine Web interface.

Additional access rights

Grant users additional access to the Mail Quarantine Web interface and choose Access type. Click Edit to open the Additional access rights window, click Add to grant access to a user. In the New access right pop-up window, click Select and choose a user from the Active Directory (you can choose only one user), and select the Access type from the drop-down list:

Administrator - User has admin access to the Mail Quarantine Web interface.

Delegated access - Use this access type if you want to let a user (delegate) to see and manage quarantined messages of another recipient. Specify the Recipient address by typing an email address for a user, whose quarantined messages will be managed by the delegate. If a user has aliases in the Active Directory, you can add additional access rights to each alias, if desired.


An example of users that were granted additional access rights to the Mail Quarantine Web interface:


To access the Web interface of Mail Quarantine, open your web browser and use the URL specified in Advanced setup (F5) > Server > Mail quarantine > Web interface > Web url.



Releases email(s) to its original recipient(s) using the Replay directory and deletes it from quarantine. Click Submit to confirm the action.


When releasing an email from quarantine, ESET Mail Security ignores the To: MIME header because it can be easily spoofed. Instead, it uses the original recipient information from RCPT TO: command acquired during the SMTP connection. This ensures that the correct email recipient receives the message being released from quarantine.


Deletes item from quarantine. Click Submit to confirm the action.

When you click Subject, a pop-up window will open with details about the quarantined email, such as Type, Reason, Sender, Date, Attachments, etc.


Click Show headers to review the header of the quarantined email.


If desired, click Release or Delete to take action with a quarantined email message.


You must close your browser window to completely log out of the Mail Quarantine Web interface. Otherwise, click Go to quarantine view to return to the previous screen.



If you are having problems accessing the Mail Quarantine Web interface from your browser or are getting the error HTTP Error 403.4 - Forbidden or similar, check to see which Quarantine type is selected and make sure it is Local quarantine and that Enable web interface is enabled.